What is BS 2880 – Methods of testing of cellulose acetate flake about? 
Cellulose acetate flakes are a non-plasticized acetic acid ester of cellulose (excluding mixed acid esters) in flake form.
BS 2880 is a European Standard that discusses cellulose acetate flakes.
BS 2880 describes methods of test for the following cellulose acetate flake properties:
- Moisture content
- Ash content
- Acetic acid yield
- Bulk density
- Particle size distribution
- Free acidity
- Viscosity ratio of a 5 g/L solution at 25 °C
- Viscosity at a concentration of 60 g/L
- Viscosity at 25 % concentration at 25 °C
- Insoluble particles
- Original light absorption and change of light absorption after heating of plasticized cellulose acetate
- The reduction in viscosity ratio on moulding
Who is BS 2880 - Methods of testing of cellulose acetate flake for?  
BS 2880 on methods of testing of cellulose acetate flake form is relevant to: 
- Manufacturers of thermosetting materials
- Manufacturers of cellulose acetate flakes
- The plastic processing industry
- Quality control and testing personnel 
- Regulatory bodies
Why should you use BS 2880 - Methods of testing of cellulose acetate flake? 
Determining the aforementioned properties in cellulose acetate flake is essential when it comes to evaluating whether the materials are fit for the intended end-use application and performance.
BS 2880 walks you through the procedures to determine the aforementioned properties of cellulose acetate flakes, that demonstrate its performance capabilities when used in plastic materials.
If you are a manufacturer of products made from cellulose acetate flakes, compliance with BS 2880 guidelines can help you to ensure that your materials meet the performance requirements of the end-product application. As a result, failures arising from instability, high moisture absorption and premature degradation can be avoided.
